Liu, Xiao published the artcileInhibition of Discharge Side Reactions by Promoting Solution-Mediated Oxygen Reduction Reaction with Stable Quinone in Li-O2 Batteries, Quality Control of 143-24-8, the main research area is lithium oxygen battery quinone redox mediator oxygen reduction reaction; Li2O2; lithium−oxygen batteries; oxygen reduction reaction; quinone; redox mediator; solution mediated.
Aprotic lithium-oxygen (Li-O2) batteries with an ultrahigh theor. energy d. have great potential in rechargeable power supply, while their application still faces several challenges, especially poor cycle stability. To solve the problems, one of the effective strategies is to inhibit the generation of the LiO2 intermediate produced via a surface-mediated oxygen reduction reaction (ORR) pathway, which is an important species inducing byproduct generation and low cell cyclic stability. Herein, a series of quinones and solid materials serve as the solution-mediated and surface-mediated ORR catalysts, and it was found that the generation of LiO2 and byproducts from solid catalysts was inhibited by quinones. Among the studied quinones, benzo[1,2-b:4,5-b’]dithiophene-4,8-dione, a quinone mol. with the advantage of a highly sym. planar and conjugated structure and without α-H, exhibits high redox potential, diffusion coefficient, and electrochem. stability, and consequently the best ORR activities and the capability to inhibit byproduct generation. It indicated that the increase of the solution-mediated ORR pathway plays an important role in restraining the discharging side reaction, substantially improving cell cycle stability and capacity. This study provides the theor. and exptl. basis for better understanding the ORR process of Li-O2 batteries.
ACS Applied Materials & Interfaces published new progress about Carbon paper. 143-24-8 belongs to class ethers-buliding-blocks, name is 2,5,8,11,14-Pentaoxapentadecane, and the molecular formula is C10H22O5, Quality Control of 143-24-8.
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem